<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="jq/jquery1.9/jquery-1.9.0.js"></script>
    <style>
        .ball {
            width: 50px;
            height: 50px;
            background: hotpink;
            border-radius: 50%;
        }
    </style>
</head>

<body>
    <div class="ball ball1"></div>
    <div class="ball ball2"></div>
    <div class="ball ball3"></div>
    <div class="ball ball4"></div>
    <div class="ball ball5"></div>
    <br>
    <input type="button" value="move" onclick="doMove()">
    <script>
        function doMove() {
            //获取jQuery对象
            var ball1 = $(".ball1");
            var ball2 = $(".ball2");
            var ball3 = $(".ball3");
            var ball4 = $(".ball4");
            var ball5 = $(".ball5");
            // jQuery对象.animate({样式名1:样式值1,样式名2:样式值2,},时间,回调函数);
            ball1.animate({ "margin-left": "100px" }, 1000, function () {
                ball2.animate({ "margin-left": "200px" }, 1000, function () {
                    ball3.animate({ "margin-left": "300px" }, 1000, function () {
                        ball4.animate({ "margin-left": "400px" }, 1000, function () {
                            ball5.animate({ "margin-left": "500px" }, 1000, function () {
                                ball5.animate({ "margin-left": "0px" }, 1000, function () {
                                    ball4.animate({ "margin-left": "0px" }, 1000, function () {
                                        ball3.animate({ "margin-left": "0px" }, 1000, function () {
                                            ball2.animate({ "margin-left": "0px" }, 1000, function () {
                                                ball1.animate({ "margin-left": "0px" }, 1000);
                                            });
                                        });
                                    });
                                });
                            });
                        });
                    });
                });

            });
        }
    </script>
</body>

</html>